Mineral oils: processes and products – Chemical conversion of hydrocarbons – Cracking
Patent
1992-10-13
1995-10-03
McFarlane, Anthony
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Cracking
208113, 208149, 208152, 209 8, 209636, C10G 1104, C10G 1118
Patent
active
RE0350460
ABSTRACT:
By continuously or intermittently adding amounts of magnetically active moieties, e.g. iron compounds, over time so that the moiety deposits on a catalyst or sorbent in a fluid catalytic cracker or similar circulating hydrocarbon conversion unit, older catalyst, being more magnetic, can be readily separated from catalyst which has been in the system a shorter time. Separation is readily accomplished by passing the catalyst and/or sorbent through a magnetic field and discarding the more magnetic 50% by wt. or more preferably 20% by wt., while recycling the remainder back to the hydrocarbon conversion unit.
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Benslay Roger M.
Hettinger, Jr. William P.
McFarlane Anthony
Willson, Jr. Richard C.
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